<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        ul li{
            border-bottom: 1px solid #eee;
            cursor: pointer;
            margin: 0;
            padding: 0;
        }
    </style>
</head>
<body>
<script src="vue.js"></script>
<div id="todo-list-example">
    <input
            v-model="newTodoText"
            v-on:keyup.enter="addNewTodo"
            placeholder="Add a todo"
    >
    <ul>
        <li
                is="todo-item"
                v-for="(todo, index) in todos"
                v-bind:key="todo.id"
                v-bind:title="todo.title"
                v-on:remove="todos.splice(index, 1)"
        ></li>
    </ul>
</div>
<script>
    Vue.component('todo-item', {
        template: '\
            <li>\
              {{ title }}\
              <button v-on:click="$emit(\'remove\')">X</button>\
            </li>\
        ',
        props: ['title']
    });

    new Vue({
        el: '#todo-list-example',
        data: {
            newTodoText: '',
            todos: [
                {
                    id: 1,
                    title: 'Do the dishes',
                },
                {
                    id: 2,
                    title: 'Take out the trash',
                },
                {
                    id: 3,
                    title: 'Mow the lawn'
                }
            ],
            nextTodoId: 4
        },
        methods: {
            addNewTodo: function () {
                this.todos.push({
                    id: this.nextTodoId++,
                    title: this.newTodoText
                });
                this.newTodoText = ''
            }
        }
    })
</script>
</body>
</html>